Blown head gasket on 96 Tacoma " Oil in coolant"

Was replacing the throttle body for high idle when I realized there was a substantial amount of oil in the coolant. This had been sitting all winter, but i'm sure it had plenty of antifreeze and not just water. I started it up watching it closely so I didn't over heat it. I see some smoke coming from what looks like the back of the head, the temp got to 3/4 and I shut her down. I'm just puzzled cuz it showed no signs before I stored it for the winter. I'm going to try and do do a compression test today. I was wondering if anyone new a good place to get a OE gasket and bolts? And Procedure for taking the head bolts off and specs for putting the back on? New to forms and only had this truck for a year. I need the pro's help on this one

 

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